Chemistry 401

Intermediate Inorganic Chemistry

University of Rhode Island

Practice Problems

Exercises and Problems are from Shriver & Atkins, 4th edition. Some textbook examples have additional questions to the linked exercise or problem.


Molecular Structure and Covalent Bonding

Exercise 2.4

Exercise 2.19

Exercise 2.6

Problem 2.1

Exercise 2.9

Problem 2.4

Exercise 2.16

Exercise 2.18

1. Write the Lewis dot structure for the following species: a) chlorine dioxide; b) perchlorate ion; c) permanganate ion. Give the formal charge and the oxidation number for each atom in each species. Answers

2. Predict the bond angles for a) chlorine dioxide; b) perchlorate ion; c) permanganate ion. Answers

3. One of the VSEPR structures painted on the wall outside of Room 163 is incorrect. Report the compound erroneously depicted. Answers

4. Predict the structure, including estimates of all bond angles, for the following: a) ClO3 b) XeO3; c) CrO2F2. Also give the hybridization for the central atom. Answers

5. Label the following orbitals as σ, π, δ, σ*, π*, or δ*.

Answers

6. The gas phase ionization potentials for some of the first row diatomic molecules are given below:

Molecule

Li2

C2

N2

O2

F2

Ionization Potential (eV)

5.1127

11.4

15.5808

12.0697

15.697

Explain the trends in the ionization potentials using the molecular orbital diagrams presented in class. Answers

7. For the following species, write Lewis dot structures, predict the molecular geometry, estimate all bond angles (to ±2°), and give the hybridization of the central atom: a) ClO2; b) SiF62–; c) CrO42–; d) XeF2. Answers

8. Draw a molecular orbital diagram for the hypochlorite ion. What is the bond order? Is this consistent with the bonding predicted by a Lewis dot structure? Answers

9. For the following species, write Lewis dot structures, predict the molecular geometry, estimate all bond angles (to ±2°), and give the hybridization of the central atom: a) ClO3; b) SF6; c) MnO4; d) XeOF2. Answers

10. Draw a molecular orbital diagram for the hydroxide ion. What is the bond order? Is this consistent with the bonding predicted by a Lewis dot structure? Answers